TW201834622A - Disposable diaper - Google Patents

Abstract

To increase ventilation in an area where a tuck is formed in a disposable diaper separated into a front panel outer body, a rear panel outer body, and an absorbent body. A disposable diaper equipped with a front panel outer body (10), a rear panel outer body (20), and an absorbent body (30), wherein: the absorbent body (30) is connected, via a connecting part (40) having a peak fold (41) and a valley fold (42) that extend in the widthwise direction of the diaper, to the front panel outer body (10) and/or the rear panel outer body (20); the connecting part (40) is obtained by layering, in the thickness direction, a liquid-impermeable leakage prevention sheet (51) and an outer-surface nonwoven sheet (52) positioned on the surface of the leakage prevention sheet (51) that does not face the skin; and the outer-surface nonwoven sheet (52) extends so as to project in the lengthwise direction of the diaper beyond the end edge of the upper-end edge (51a) and/or the lower-end edge (51b) of the leakage prevention sheet (51).

Description

Disposable diaper

The present invention relates to a disposable diaper that is worn on the wearer's lower jaw to absorb and retain liquid such as urine.

Traditionally, disposable diapers having a plurality of live pleats formed in the back body are well known. For example, in the disposable diaper disclosed in Patent Document 1, the pleats are formed by folding the sheet members constituting the back body along the upward fold line and the downward fold line. The pleats can be deployed in the up and down direction in conjunction with the extension of the wearer's back when the wearer leans forward. Therefore, it is possible to prevent the back body of the diaper from being displaced toward the lower jaw portion of the wearer and being relaxed in the vicinity of the lower jaw portion, and to prevent the wearer's back from being exposed due to insufficient length of the back body portion, or A situation arises between the disposable diaper and the wearer's back.

Prior technical literature Patent literature

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2012-239555

As described above, by forming a plurality of active pleats in the back body of the disposable diaper, the diaper can be adapted to conform to the stretching of the wearer's body, thereby enhancing the fit or wearing feeling of the diaper. However, since the pleats are formed by folding the sheet members constituting the back body, the air permeability of the overlapping portions of the sheet members is lowered, so that moisture is retained between the wearer's skin and the diaper, and is worn by the wet suffocation. Users bring a sense of unhappiness. In addition, when there are a plurality of live pleats, the air permeability is significantly lowered. Low problem.

Therefore, the object of the present invention is to improve the air permeability of the active pleat formation portion in the disposable diaper which is separated into the front body exterior body, the rear body exterior body, and the absorbent body.

This invention relates to a disposable diaper. The disposable diaper of the present invention comprises a front outer body 10 on the wearer's abdomen side, a rear body outer body 20 on the wearer's back side, and an absorbent body 30 on the wearer's lower jaw. The present invention is applicable to any of a pant type disposable diaper and a belt type disposable diaper. The pull-on disposable diaper, the front outer body 10 and the rear outer body 20 are joined to each other by a side sealing portion provided on the right and left sides in the width direction of the disposable diaper, and are connected in a substantially annular shape and formed to be positioned. The wearer surrounds the waist opening portion of the tummy portion and the type of the leg opening portion of the wearer surrounding the two leg portions. In the belt-type disposable diaper, a pair of left and right fixing belts are attached to both end portions in the width direction of one of the front outer casing 10 and the rear outer casing 20, and the fixing belt is fixed by The other side of the outer body is mounted on the wearer's lower jaw.

The absorbent body 30 is coupled to either or both of the front outer casing 10 and the rear outer casing 20 via a coupling portion 40 having an upwardly folded portion 41 and a downwardly folded portion 42 extending in the width direction of the disposable diaper. The outer body of the person. The term "upwardly folded portion" as used herein refers to a folded portion that is convex upward in the wearing state, and the "downwardly folded portion" refers to a folded portion that is convex downward in the wearing state. Further, the connecting portion 40 may be a separate member separated from the front outer body 10, the rear body outer body 20, and the absorbent body 30, or may be a member integrated with the absorbent body 30, or may be A member that is integral with the outer body. In addition, in the present specification, the term "outer body" means either or both of the front body exterior body 10 and the rear body exterior body 20.

According to the above configuration, the connecting portion 40 is provided between the absorbent main body 30 and the exterior bodies 10 and 20, and the pleats are formed in the connecting portion 40. The ventilation of the active pleat formation site can be improved.

Further, it is necessary to prevent leakage of excrement such as urine or soft stool from the joint portion 40. Therefore, in the present invention, the connecting portion 40 is formed in a structure in which the leakage preventing sheet 51 and the outer non-woven fabric sheet 52 on the non-facing surface side of the leakage preventing sheet 51 are laminated in the thickness direction. The leakage preventing sheet 51 preferably has a sheet member that is liquid-impermeable and air-permeable. The outer nonwoven fabric sheet 52 is mainly composed of a non-woven fabric, and may be composed only of a non-woven fabric. By including the leakage preventing sheet 51 in the connecting portion 40, leakage of excrement can be prevented. Further, by covering the non-facing surface side of the leakage preventing sheet 51 with the outer nonwoven fabric sheet 52, the feeling of the connecting portion 40 can be improved.

In the present invention, the outer nonwoven fabric sheet 52 extends in the longitudinal direction of the disposable diaper beyond either or both of the upper end edge 51a and the lower end edge 51b of the leakage preventing sheet 51. Further, the term "upper end edge" is the upper end side edge in the wearing state, that is, the end edge of the disposable diaper on the side of the waist opening portion. Further, the "lower end edge" is referred to as the lower end side edge in the wearing state, that is, the lower crotch side edge of the disposable diaper. In this manner, the upper end edge 51a and/or the lower end edge 51b of the leakage preventing sheet 51 are covered by the outer nonwoven fabric sheet 52, whereby the hand feeling or appearance can be improved.

The joint portion 40 has an intermediate portion 43 between the upwardly folded portion 41 and the downwardly folded portion 42. The intermediate portion 43 has an engaging portion 43a which is detachably or non-releasably joined to the facing portion of the connecting portion 40 in a state where the upward folded portion 41 and the downward folded portion 42 are folded. A portion of either or both of the face-side portion and the portion facing the skin-facing side. Further, the intermediate portion 43 is bonded not only to the portion facing the skin surface side but also to the portion facing the skin surface side in the joint region 43a. Moreover, the joint region 43a may cover the entire region of the intermediate portion 43, but in this case, the joint region 43a releasably joins the intermediate portion 43 to its facing portion (i.e., temporary joint). In addition, the joint region 43a can also be connected to the intermediate portion 43 in a non-peelable manner. It is fitted to its facing portion, but in this case, the joint region 43a is partially disposed in the intermediate portion 43. Further, when the joint region 43a is provided at a portion of the intermediate portion 43, the other regions are referred to as the non-joining region 43b. Further, in the pant-type disposable diaper, the so-called side seal portion 4 functions as a joint region 43a as referred to herein.

In the disposable diaper of the present invention, it is preferable that the connecting portion 40 and the outer casing form respective bodies. In this case, the connecting portion 40 further has an inner region 44 which is provided with an engaging portion 44a extending from the downwardly folded portion 42 to the outer casing side and joined to the non-facing surface side of the outer casing. Further, in the joint portion 44a of the inner region 44, it is preferable that the outer nonwoven fabric sheet 52 extends beyond the upper end edge 51a of the leakage preventing sheet 51.

In the disposable diaper of the present invention, the connecting portion 40 and the absorbent body 30 are preferably formed into individual bodies. In this case, the connecting portion 40 further has an outer region 45 that extends from the upper folded portion 41 toward the absorbent body 30 side and joined to the non-facing surface portion 45a of the absorbent body 30. Further, in the joint portion 45a of the outer region 45, it is preferable that the outer nonwoven fabric sheet 52 extends beyond the lower end edge 51b of the leakage preventing sheet 51.

According to the above configuration, in the portion where the connecting portion 40 is joined to the outer casing or the absorbent main body 30, the outer non-woven fabric sheet 52 extends beyond the end edges 51a and 51b of the leakage preventing sheet 51, and the outer non-woven fabric sheet 52 can be completely covered. The end edges 51a and 51b of the leakage preventing sheet 51 prevent the leakage preventing sheet 51 from being exposed. Further, according to the above configuration, since the outer non-woven fabric sheet 52 is composed of a non-woven fabric, the outer peripheral non-woven fabric sheet 52 completely covers the edge of the leakage preventing sheet 51, whereby the appearance or feel can be improved.

In the disposable diaper of the present invention, the inner surface non-woven fabric sheet 53 may be laminated in the thickness direction of the joint portion 40 on the skin-facing side of the leakage preventing sheet 51. The inner non-woven fabric sheet 53 is mainly composed of a non-woven fabric, and may be composed only of a non-woven fabric. In this case, the inner non-woven fabric sheet 53 is preferably external The non-woven fabric sheet 52 extends in the longitudinal direction of the disposable diaper beyond either or both of the upper end edge 51a and the lower end edge 51b of the leakage preventing sheet 51. In particular, the outer non-woven fabric sheet 52 and the inner surface non-woven fabric sheet 53 of the cover leakage preventing sheet 51 are preferably joined to each other at a portion extending beyond the edge of the leakage preventing sheet 51.

According to the above configuration, the inner surface non-woven fabric sheet 53 is bonded to the skin surface of the leakage preventing sheet 51, so that the wearer's skin does not directly contact the leakage preventing sheet 51, and the inner surface non-woven fabric sheet having a good touch is provided. 53 contact with skin. Further, according to the above configuration, since the inner non-woven fabric sheet 53 which is comfortable to the touch of the skin contacts the wearer's skin, the gap between the skin and the connecting portion 40 is ensured, and the moisture remaining between the two can be discharged to the outside.

In the disposable diaper of the present invention, the outer non-woven fabric sheet 52 may be disposed to exceed either or both of the upper end edge 51a and the lower end edge 51b of the leakage preventing sheet 51, and then folded back to the skin of the leakage preventing sheet 51. Face side. In other words, the outer peripheral non-woven fabric sheet 52 is formed to sandwich the end edges 51a and 51b of the leakage preventing sheet 51 from both the skin-facing surface and the non-facing surface.

According to the above configuration, the outer non-woven fabric sheet 52 is used to sandwich the end edges 51a and 51b of the leakage preventing sheet 51, and the end edge of the leakage preventing sheet 51 can be more reliably prevented from being exposed. Further, if the outer non-woven fabric sheet 52 is extended to the non-facing surface of the leakage preventing sheet 51, the outer non-woven fabric sheet 52 can be used to prevent the leakage preventing sheet 51 from directly contacting the wearer's skin. That is, the function of the inner non-woven fabric sheet 53 can be performed by the outer non-woven fabric sheet 52.

According to the present invention, in the disposable diaper which is separated into the front body exterior body, the rear body exterior body, and the absorbent body, the air permeability of the active pleat formation portion can be improved.

1‧‧‧Predecessor

2‧‧‧ Back body

3‧‧‧Lower Department

4‧‧‧Side sealing department

4a‧‧‧Gap section

5‧‧‧Lumbar opening

6‧‧‧ leg opening

10‧‧‧Predecessor body

11‧‧‧Inner film

12‧‧‧ External film

13‧‧‧Lumbar telescopic member

20‧‧‧Back body

21‧‧‧ inner film

22‧‧‧ outside film

23‧‧‧Lumbar telescopic member

30‧‧‧Absorbable ontology

31‧‧‧Acceptor

32‧‧‧Upper film

33‧‧‧ Back film

34‧‧‧ Cover

35‧‧‧ side film

36‧‧‧Three-dimensional pleated telescopic members

37‧‧‧ leg flexure members

40‧‧‧Connecting Department

40A‧‧‧ front side joint member

40B‧‧‧Back side joint member

41‧‧‧Upward folding

42‧‧‧Folding section

43‧‧‧Intermediate area

43a‧‧‧ joint area

43b‧‧‧non-joined area

44‧‧‧ inside area

44a‧‧‧ joints

45‧‧‧Outer area

45a‧‧‧ joints

46‧‧‧Connecting section telescopic members

47‧‧‧lower abdomen expansion member

51‧‧‧ leakproof film

51a‧‧‧Upper edge

51b‧‧‧Lower edge

52‧‧‧Outside non-woven fabric

52a‧‧‧Upper extension

52b‧‧‧lower extension

53‧‧‧Inside non-woven fabric

53a‧‧‧Upper extension

53b‧‧‧lower extension

100‧‧‧Disposable diapers

Fig. 1 is a schematic external perspective view of a disposable diaper according to an embodiment of the present invention.

Fig. 2 is a development view of a disposable diaper according to an embodiment of the present invention.

Fig. 3 is a longitudinal sectional view showing a disposable diaper according to an embodiment of the present invention.

Fig. 4 is a longitudinal sectional view showing a state in which a live pleat is unfolded from the state shown in Fig. 3.

Fig. 5 is an external perspective view showing a state in which a live pleat is unfolded from the state shown in Fig. 1.

Fig. 6 is an enlarged longitudinal sectional view showing an enlarged main body portion of the rear body side in the longitudinal sectional view shown in Fig. 3.

Fig. 7 is a cross-sectional view showing a first modification of the disposable diaper according to the present invention corresponding to Fig. 6.

Fig. 8 is a cross-sectional view showing a second modification of the disposable diaper according to the present invention corresponding to Fig. 6.

Fig. 9 is an external perspective view showing a third modification of the disposable diaper according to the present invention corresponding to Fig. 1.

[Embodiment of the Invention]

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments described below, and may be appropriately changed from the following aspects to those skilled in the art.

In the present specification, the term "longitudinal direction" refers to the front-rear direction of the disposable diaper, and refers to the direction in which the front and back of the disposable diaper are connected. Further, the term "width direction" means a direction orthogonal to the longitudinal direction on a plane. In the illustration of the present case, the "longitudinal direction" is represented by the Y axis, and the "width direction" is represented by the X axis.

In the present specification, the term "face to face" refers to the face of the wearer's skin in the wearing state of the disposable diaper. In addition, the term "non-facing to the skin" means that the surface of the disposable diaper is not facing the surface of the wearer's skin, that is, the side opposite to the surface facing the skin.

In the present specification, the term "A to B" means "A or more B or less".

[outer body and absorbent body]

Fig. 1 is a perspective view showing the appearance of a disposable diaper according to an embodiment of the present invention. In addition, Fig. 2 is a development view of the disposable diaper shown in Fig. 1, which shows a state in which the diaper is viewed from the side facing the skin surface. In addition, Fig. 3 is a longitudinal sectional view of the disposable diaper shown in Fig. 1, which is a cross-sectional structure taken along line III-III of Fig. 1 . In the present specification, the description of the present invention will be made by taking the case where the present invention is applied to a pant-type disposable diaper. However, the present invention is not limited to the use of a pant type disposable diaper, and can also be applied to a belt type disposable diaper.

As shown in FIGS. 1 to 3, the disposable diaper 100 of the present invention is divided into a front body 1 that contacts the abdomen of the wearer, a back body 2 that contacts the back of the wearer, and a second body in the longitudinal direction (Y-axis direction). The lower jaw portion 3 between the front body 1 and the back body 2. In the present embodiment, the front body exterior body 10 is located in the front body 1, and the rear body exterior body 20 is located in the back body 2. Further, the absorbent body 30 is located at the lower jaw portion 3. The absorbent body 30 extends in the longitudinal direction by joining the front body 1 and the back body 2 with the crotch portion 3 as a center. Therefore, in the absorbent body 30, the end portion on the side of the front body 1 is overlapped with the front outer body 10 in the thickness direction. On the other hand, the end portion on the side of the back body 2 is overlapped with the rear body exterior body 20 in the thickness direction. In the present invention, the front body exterior body 10, the rear body exterior body 20, and the absorbent body 30 are basically constituted by separate members. In the present embodiment, each of the exterior bodies 10 and 20 is formed in a substantially rectangular shape having a long width in a plan view. Further, the absorbent body 30 is formed in a substantially rectangular shape having a long longitudinal direction in plan view. However, the shape of each of the exterior bodies 10 and 20 and the absorbent body 30 is not limited to the illustrated form, and can be appropriately modified within a range in which the function of the present invention can be exerted.

Further, the front end outer casing 10 and the left and right end portions of the rear outer casing 20 in the width direction (X-axis direction) are provided with side surface sealing portions 4. The side sealing portion 4 faces the right and left ends of the front outer body 10 and the rear body outer body 20 The parts are joined to each other. The bonding method may be, for example, a conventional method such as heat sealing, ultrasonic sealing, or adhesion using a hot melt adhesive or the like. As shown in Fig. 1, the front outer casing 10 and the rear outer casing 20 are joined to each other at the side sealing portion 4, and the outer casings 10 and 20 are connected in a ring shape. Further, the waist opening portion 5 is defined by the front outer casing 10 and the upper edge of the rear body exterior body 20. Further, from the lower end portion of the front outer casing 10 to the lower end portion of the rear outer casing 20, the absorbent main body 30 is disposed to be laid. Therefore, the right and left leg opening portions 6 can be defined by the left and right side edges of the absorbent body 30 and the lower edges of the outer casings 10, 20. The wearer can wear the pant-type disposable diaper 100 by wearing two legs from the waist opening portion 5 and extending one foot from the left and right leg opening portions 6.

As shown in Fig. 3, each of the exterior bodies 10 and 20 includes: inner sheets 11 and 21 on the skin-facing side; outer sheets 12 and 22 on the non-facing side; and between the inner and outer sheets One or more of the waist elastic members 13, 23. When the plurality of the waist elastic members 13 and 23 are plural, they are arranged to be spaced apart from each other by a predetermined interval in the longitudinal direction. Each of the waist elastic members 13 and 23 is sandwiched and fixed between the inner sheets 11 and 21 and the outer sheets 12 and 22 while being stretched in the diaper width direction. For example, a hot melt adhesive or the like is directly applied to the stretched waist elastic members 13 and 23, and the member coated with the adhesive is disposed on the inner sheets 11, 21 and the outer sheets 12, 22. Just between. In this way, when the waist elastic members 13 and 23 are contracted, the inner sheets 11, 21 and the outer sheets 12, 22 are wrinkled to form a plurality of fine wrinkles (waist gathers). The number of the arrangement of the waist elastic members 13 and 23 is not particularly limited, but is preferably, for example, 3 to 20 or 4 to 15.

The sheet member forming the inner sheets 11 and 21 and the outer sheets 12 and 22 can be made of a conventional product, and is not particularly limited, but is preferably formed of a non-woven fabric having a good touch. Examples of the non-woven fabric include hot air non-woven fabric, point fusion non-woven fabric, non-woven fabric nonwoven fabric, air-flow non-woven fabric, melt-blown non-woven fabric, SMS non-woven fabric, and SMMS non-woven fabric. In addition, the waist elastic members 13, 23 can utilize conventional flexibility A telescopic member, but is preferably applied, for example, as a wire-like elastic rubber. As such a rubber material, a styrene rubber, an olefin rubber, an urethane rubber, an ester rubber, a polyurethane, a polyethylene, a polystyrene, a styrene-butadiene, an anthrone can be used. , polyester and other materials.

Further, as shown in Fig. 3, the outer sheets 12, 22 may be extended further in the longitudinal direction than the inner sheets 11, 21, and the extended portion may be folded back at the edge of the waist opening portion 5 It faces the skin side and is joined to the skin facing surface of the inner sheets 11, 21. In this way, the skin of the waist opening 5 can be softened.

As shown in Fig. 3, the absorbent body 30 basically includes an absorbent body 31 for absorbing and retaining body fluid, a liquid-permeable top sheet 32 covering the skin-facing surface of the absorbent body 31, and a coated absorbent body 31. It is not a liquid-impermeable back sheet 33 facing the skin surface. The upper piece 32 and the back piece 33 are joined to each other at the peripheral edge portion of the absorber 31. The bodily fluid discharged from the wearer's lower jaw passes through the upper sheet 32 to the absorbent body 31, and is prevented from leaking to the outside by the back sheet 33.

The absorber 31 is an element for absorbing body fluid such as urine and holding the absorbed body fluid. The absorber 31 is usually formed by coating an absorbent material with a chip coated on a face paper or the like. The absorbent material constituting the absorbent body 31 can be a conventional material. The absorbent material may be, for example, a fluff pulp, a superabsorbent polymer, or a hydrophilic sheet. In addition, the absorbent material may be used alone or in combination of two or more kinds in the fluff pulp, the superabsorbent polymer, or the hydrophilic sheet. Absorbent materials are generally useful as mat-like articles that form a single or multiple layers. The shape of the absorbent body 31 can be appropriately designed in accordance with the shape, size, and use of the disposable diaper. For example, the shape of the absorber 31 can be made into an hourglass type as shown in Fig. 2, and it can also be made into a rectangular shape, a circular shape, or a gourd type which is generally used.

The upper sheet 32 is an element that directly contacts the skin of the wearer's lower jaw, thereby allowing body fluid such as urine to penetrate into the absorbent body 31. Therefore, the upper sheet 32 is made of a highly flexible liquid permeable material. In addition, in the case of this case, The term "liquid permeability" means, for example, a property in which water is permeable when less than 1 minute of pouring water of 5 ml of normal temperature on a sample under standard atmospheric pressure. Further, examples of the liquid permeable material constituting the top sheet 32 are woven fabric, non-woven fabric, or porous film. Further, for example, a fiber of a thermoplastic resin such as polypropylene or polyethylene, polyester, or nylon may be subjected to a hydrophilization treatment to obtain a nonwoven fabric.

The back sheet 33 is an element that prevents body fluid that has passed through the upper sheet 32 and is absorbed by the absorber 31 from leaking to the outside. Therefore, the back sheet 33 is composed of a liquid-impermeable material. In the present specification, the term "liquid-impermeable property" means, for example, a property in which water is not impregnated even when subjected to a bath of 5 ml of normal temperature at a standard atmospheric pressure for 1 minute or more. An example of the liquid-impermeable material constituting the back sheet 33 is a plastic film made of a polyethylene resin or the like. In particular, the back sheet 33 is preferably a microporous polyethylene film formed with a plurality of fine pores of 0.1 to 4 μm.

Further, in addition to the above configuration, the absorbent body 30 also has a cover sheet 34 on the non-facing side of the back sheet 33. In order to cover the back sheet 33 and improve the hand feeling, the cover sheet 34 is attached to the non-facing surface of the back sheet 33. The material constituting the cover sheet 34 may be a woven cloth or a non-woven fabric. In particular, the material constituting the cover sheet 34 is preferably a non-woven fabric or a wet non-woven fabric made of a thermoplastic resin such as polyethylene, polypropylene or polyester.

Further, in addition to the above configuration, the absorbent body 30 further has members for constituting the three-dimensional gathers. The three-dimensional pleats are a pair of side panels 35 disposed along the left and right side edges of the absorbent body 31 and having water repellency, and one or more three-dimensional pleated telescopic members disposed at the inner end edges of the side panels 35 in the width direction. 36 constitutes. The side panel 35 has a fixing portion that is fixed to the skin-facing surface of the upper sheet 32 in the longitudinal direction, and a free end portion that is located further inside than the fixing portion in the width direction and that is not fixed to the upper sheet 32. Further, the free end portion of the side panel 35 is fixed to the three-dimensional gather elastic member 36 in an elongated state in the longitudinal direction. Therefore, when the three-dimensional pleated expansion and contraction member 36 is contracted, it is received by it. With the contraction, the free ends of the side panels 35 are erected to form a three-dimensional gather. The three-dimensional gathers formed in this manner are erected along both side edges of the absorbent body 31, and function as a leakage preventing wall for preventing lateral leakage of body fluid excreted by the wearer.

Further, in addition to the above configuration, the absorbent body 30 further has a leg stretch member 37 along the left and right side edges in the width direction of the absorbent body 30. The leg stretchable member 37 is fixed to the non-facing surface of the side panel 35, for example, in a state of being elongated in the longitudinal direction. When the leg stretch member 37 is contracted, the side panel 35 is wrinkled to form a plurality of fine pleats (leg gathers).

[Link Department]

The disposable diaper 100 of the present invention further includes a coupling portion 40 for connecting the absorbent main body 30 to the outer casing of either or both of the front outer casing 10 and the rear outer casing 20. In the embodiment described in the present specification, the front side connecting member 40A for connecting the absorbent main body 30 and the front body exterior body 10, and the rear side connecting member 40B for connecting the absorbent main body 30 and the rear body exterior body 20 are provided. As the connecting portion 40. Further, in the present invention, the connecting portion 40 may be provided on at least one side of the front body 1 side and the back body 2 side. In particular, the connecting portion 40 is preferably provided in a form in which at least the absorbent main body 30 and the rear body outer casing 20 are coupled.

Further, as shown in the cross-sectional view of Fig. 3, in the present embodiment, the front side connecting member 40A, the front body exterior body 10, and the absorbent body 30 belong to the respective body members. Similarly, the rear side connecting member 40B, the rear body outer body 20, and the absorbent body 30 also belong to the respective body members. However, although not shown in the drawings, the front side connecting member 40A (the connecting portion 40) may be formed as an integral member with the front body exterior body 10, or may be formed as an integral member with the absorbent body 30. Similarly, the rear side connecting member 40B (the connecting portion 40) may be formed as an integral member with the rear body exterior body 20, or may be formed as an integral member with the absorbent body 30.

As shown in Figures 2 and 3, the front and back sides are connected. The structural members 40A and 40B are disposed on the non-facing surface side of each of the exterior bodies 10 and 20 and the absorbent main body 30, and are formed to have substantially the same width as each of the exterior bodies 10 and 20 in the width direction. In the present embodiment, each of the connecting members 40A and 40B is formed in a substantially rectangular shape that is long in the width direction in plan view. Each of the connecting members 40A and 40B overlaps with a part of each of the exterior bodies 10 and 20 in the longitudinal direction, and the both ends of the connecting members 40A and 40B in the width direction are applied to the portions other than the overlapping portion. Side sealing. In other words, the left and right end portions in the width direction of each of the connecting members 40A and 40B are provided with side sealing portions 4 at portions other than the outer casings 10 and 20 and the overlapping portions. Further, in the both end portions in the width direction of each of the exterior bodies 10 and 20, portions other than the respective connecting members 40A and 40B and the overlapping portion are used as the side sealing portion 4, and the front side connecting member 40A and the rear side are provided. The connecting member 40B is joined to the right and left side sealing portions 4 to form a pant type.

As shown in Fig. 3, each of the connecting members 40A and 40B is folded into a substantially N-shaped cross section, and the upper surface of each of the connecting members 40A and 40B is joined to the outer casings 10 and 20 in the region facing the skin surface side. On the lower end of each of the connecting members 40A and 40B, the region facing the skin surface side is joined to the absorbent body 30. Specifically, the connecting members 40A and 40B have an upwardly folded portion 41 that is convex upward in the wearing state, and a downwardly folded portion 42 that is convex downward in the wearing state. In the present embodiment, when the upwardly folded portion 41 is compared with the downwardly folded portion 42, the opposing portion is formed, the upwardly folded portion 41 is positioned on the non-facing surface side, and the downwardly folded portion 42 is positioned on the skin facing side. The upwardly folded portion 41 and the downwardly folded portion 42 linearly extend in the width direction of each of the coupling members 40A and 40B. Therefore, by folding along the upwardly folded portion 41 and the folded down portion 42, the respective connecting members 40A and 40B have a substantially N-shaped cross section, and are formed to include a portion laminated in three layers. In the present specification, the structure of each of the connecting members 40A and 40B that can be folded along the upwardly folded portion 41 and the folded down portion 42 is referred to as "live pleats". In the present embodiment, each of the connecting members 40A and 40B has a substantially N-shaped cross section. However, the connecting members 40A and 40B are not limited thereto, and may have a substantially inverted N-shaped cross section. Type, or a configuration with multiple pleats.

Moreover, as shown in FIG. 3, each of the connection members 40A and 40B is divided into the intermediate portion 43, the inner region 44, and the outer region 45 with the upwardly folded portion 41 and the downwardly folded portion 42 as boundary lines. The intermediate portion 43 is located in a region between the upwardly folded portion 41 and the downwardly folded portion 42. Further, the inner region 44 extends from the downwardly folded portion 42 to the outer casings 10 and 20 to the upper side, and has a region joined to the non-surface-facing joint portion 44a of the outer casing. Further, in the example of Fig. 3, the entire region of the inner region 44 is formed as the joint portion 44a, but the inner region 44 may be joined to each of the outer casings 10, 20 by at least a portion. Further, the outer region 45 is a region that extends from the upwardly folded portion 41 toward the absorbent body 30 side and has a joint portion 45a that is joined to the non-facing surface side of the absorbent body 30. Further, in the example of Fig. 3, the outer region 45 is a portion of the lower end side (the lower jaw side) as the joint portion 45a, but the outer region 45 may be joined to the absorbent body 30 over the entire area. Each of the joint portions 44a and 45a described herein can be realized by a conventional adhesive such as a hot melt adhesive.

In the example shown in FIG. 3, the inner region 44 of each of the connecting members 40A and 40B is joined to the non-facing surface of the lower end portion of each of the exterior bodies 10 and 20 in the longitudinal direction. Further, the outer region 45 of each of the coupling members 40A and 40B is joined to the non-facing surface of the upper end portion of the absorbent body 30 in the longitudinal direction. In this manner, each of the connecting members 40A and 40B functions to connect the outer casings 10 and 20 and the absorbent body 30. Here, an example in which the inner region 44 of each of the coupling members 40A and 40B is joined to the lower end side of each of the exterior bodies 10 and 20 is shown. However, the inner region 44 may be joined to the upper end sides of the outer casings 10, 20. The inner region 44 is to be joined to the non-facing surface of each of the outer casings 10, 20, and is freely designed to some extent.

In addition, referring back to FIG. 2, each of the connecting members 40A and 40B is folded in a state in which the upwardly folded portion 41 and the folded down portion 42 are folded. In this state, at least one of the intermediate region 43 in the entire width direction region The portion has a joint region 43a which is releasably joined to a portion of the intermediate portion 43 facing the skin-facing side. Further, in the example shown in Fig. 2, the joint region 43a is partially formed in the intermediate portion 43, and a portion other than the portion is used as the non-joining region 43b. For example, when the description is made with reference to the example of Fig. 3, the inner region 44 is located on the skin-facing side of the intermediate region 43, and in the joint region 43a shown in Fig. 2, the intermediate region 43 and the inner region 44 are joined. Further, in the joint region 43a, the intermediate portion 43 may be substituted for the outer region 45 or the absorbent body 30 on the non-facing side thereof, or the intermediate portion 43 may be joined together with the inner region 44. The outer region 45 facing the skin side or the absorbent body 30. In this manner, in the joint region 43a, each of the joint members 40A, 40B is fixed in a folded state to restrict inadvertent unfolding thereof. By separating the joint region 43a, the joint members 40A and 40B can be developed. and also. Fig. 3 is a longitudinal sectional view showing a portion of the non-joining region 43b.

In Fig. 2, a mesh bottom is schematically applied to the joint region 43a for display. In the example shown here, the joint region 43a is disposed in a region in which the respective joint members 40A and 40B and the exterior bodies 10 and 20 are overlapped in the thickness direction, and the joint region 43a is provided in the region where the absorbent body 30 is located. The left and right sides of the width direction do not overlap with the absorbent body 30. That is, in the plan view, each of the exterior bodies (10, 20), the respective connection members (40A, 40B), and the overlapping portion of the absorbent body 30 in the longitudinal direction range is the non-joining region 43b. In this manner, the joint region 43a can also be defined as a region having a certain width in the width direction in a range not overlapping the absorbent body 30. However, in the pull-on diaper, the side seal portion 4 itself functions as the joint region 43a. Therefore, in the pull-on diaper, it is not necessary to bond the connecting members 40A and 40B to the outer casings 10 and 20 by a hot-melt adhesive or the like in addition to the side seal portion 4. That is, the joint region 43a displayed as the bottom of the mesh in Fig. 2 can be omitted.

If it is constructed as described above, it is sucked by means of individual parts. A joint portion 40 is provided between the retractable body 30 and the outer casings 10 and 20 to form a living pleat, and the spreadability of the live pleats is improved. In other words, when the absorbent body 30 is stretched, the connecting portion 40 expands the pleats in accordance with the movement, so that it is easier to spread the pleats. Then, when the pleats are unfolded, the pleats can be played by clothes worn by the wearer, etc., and the functions of the pleats can be exerted, and the effect of discharging the moisture remaining in the diaper can be expected. Further, when the outer casings 10 and 20 are connected to the absorbent main body 30 by the respective connecting members 40A and 40B, when the respective connecting members 40A and 40B constituting the flaps are unfolded, the outer casings 10 and 20 are caused to be The absorbent body 30 is separated in the longitudinal direction and is elongated toward the longitudinal direction of the disposable diaper. 4 and 5 are schematic views showing that the joint members 43A and 40B are unfolded by peeling off the joint region 43a, and the space defined by the joint members is expanded, and the outer casings 10 are 20 is separate from the absorbent body 30. In this manner, by forming a structure in which the pleats of the respective connecting members 40A and 40B can be expanded as needed, the outer casings 10 and 20 or the absorbent body 30 can be adjusted in accordance with the movement of the wearer, so that Effectively prevent gaps between the wearer's skin and the diaper. Moreover, since the diaper improves the fit of the wearer's skin, the wearing feeling is enhanced. When the joint region 43a can be peeled off in the longitudinal direction, the joint members 43A and 40B can be developed as shown in FIGS. 4 and 5 by peeling the joint region 43a.

Further, as shown in FIG. 2, in a state in which the respective connecting members 40A and 40B are completely folded along the upwardly folded portion 41 and the folded down portion 42, the outer casings 10 and 20 cover the longitudinal end of the absorbent body 30. The face of the face is better. That is, the upwardly folded portion 41 (see FIG. 3) of each of the connecting members 40A and 40B extending in the width direction, the edge of the joint region 43a extending in the longitudinal direction, the intermediate portion 43, and the outer region 45 can be defined. A space having a downward opening. Further, the longitudinal end portion of the absorbent body 30 can be accommodated in the space. Further, although not shown in the drawings, the end portion of the absorbent body 31 constituting the absorbent body 30 in the longitudinal direction may be accommodated in the space defined herein. In between. According to this configuration, the body fluid or the soft fluid flowing in the longitudinal direction of the absorbent body 30 can be accommodated in the space and can be prevented from leaking to the outside.

Further, the intermediate portion 43 may be joined to the inner region 44 or the outer region 45 in a non-releasable manner at the joint region 43a. In this case, since the intermediate portion 43 is not joined to the portion facing the skin surface side and the non-facing surface side in the non-joining region 43b, the respective connecting members 40A and 40B can be freely deployed as needed. In this case, for example, when the wearer starts moving, the pleats of the respective joint members 40A, 40B are unfolded in the non-joining region 43b. When the non-expanded state and the unfolded state of the respective connecting members 40A and 40B are repeatedly presented by the movement of the wearer, the space defined by each of the connecting members is reduced as time passes, and the pleating of each connecting member is made. Part of the function is like a pump, so that the air trapped in the space is continuously discharged. By using the development of the pleats in this manner, it is easy to discharge the moisture remaining in the space of each of the connection members 40A and 40B, and the air permeability of the pleat formation portion can be improved. Further, in the left and right end portions of the connecting members 40A and 40B in the width direction, the overlapping portion and the outer casing may be provided by the side surface sealing except for the portion overlapping the outer casings 10 and 20. 10, 20 together with the side seal synthetic peelable or non-peelable. When the overlapping portion is sealed to the side surface together with the exterior bodies 10 and 20, the joint region 43a can be omitted. Further, the entire lengthwise left and right end portions of the connecting members 40A and 40B in the width direction may be additionally sealed with the outer casings 10 and 20 in a non-detachable side surface.

In this manner, the intermediate portion 43 and the joint region 43a joining the facing portions thereof may be either a peelable temporary joint or a non-peelable joint. The peelable temporary bonding and the non-peelable bonding of the bonding region 43a described herein can be realized by a conventional adhesive such as a hot-melt adhesive, as long as the coating amount or adhesion of the adhesive is adjusted. Releasable or non-peelable. The peelable joint state means that, for example, when peeling is desired in advance, both of them can be peeled off without causing the intermediate portion 43 or the sheet member constituting the facing portion to be cracked or broken. relatively The term "non-peelable joint state" means that, for example, if peeling is not previously contemplated, if the peeling is to be performed, the intermediate portion 43 or the sheet member constituting the facing portion may be cracked or broken. status. Further, although the joint region 43a may cover the entire width direction region of the intermediate portion 43, in this case, the joint region 43a releasably joins (i.e., temporarily engages) the intermediate portion 43 to the facing portion thereof. Further, the joint region 43a may be joined to the portion facing the intermediate portion 43 in a non-releasable manner, but in this case, the joint region 43a is partially provided in the width direction of the intermediate portion 43.

[Sheet laminated structure of joint portion]

Next, a structure of a sheet member or the like constituting the connecting portion 40 (the connecting members 40A and 40B) will be described with reference to Fig. 6 . Fig. 6 is a view showing an enlarged view of the periphery of the rear side connecting member 40B shown in Fig. 3. Hereinafter, the structure of the rear side connecting member 40B will be described as an example, but the structure of the rear side connecting member 40B described here is also applicable to the front side connecting member 40A.

As shown in Fig. 6, the rear side connecting member 40B has a structure in which at least two members are stacked in the thickness direction. That is, in the example shown in Fig. 6, the rear side connecting member 40B has the leakage preventing sheet 51 and the outer non-woven fabric sheet 52 attached to the non-facing surface side.

The leakage preventing sheet 51 is a liquid-impermeable sheet member and is disposed for the purpose of preventing leakage of body fluid from the rear-side connecting member 40B. Similarly to the back sheet 33, the leakage preventing sheet 51 is preferably a plastic film such as a polyethylene resin. In particular, in order to ensure the air permeability of the rear side connecting member 40B, it is preferable to use a microporous polyethylene film having a plurality of fine pores of 0.1 to 4 μm as the leakage preventing sheet 51. By forming the leakage preventing sheet 51 by the sheet member having air permeability and liquid impermeability, it is possible to prevent the body fluid from reaching the rear side connecting member 40B from leaking, and it is possible to suppress the occurrence of wetness in the portion.

The outer non-woven fabric sheet 52 is a sheet member mainly composed of a non-woven fabric, and is provided for the purpose of improving the non-facing surface of the leakage preventing sheet 51. Set. The nonwoven fabric used herein is not particularly limited, and examples thereof include materials such as hot air non-woven fabric, point fusion non-woven fabric, non-woven fabric nonwoven fabric, air-flow non-woven fabric, melt-blown nonwoven fabric, SMS non-woven fabric, and SMMS non-woven fabric. Basically, a sheet member having liquid permeability and air permeability and having a good hand can be used as the outer nonwoven fabric sheet 52.

As shown in Fig. 6, the outer nonwoven fabric sheet 52 extends in the longitudinal direction toward the waist opening portion 5 side, and covers the upper end edge 51a of the leakage preventing sheet 51. Specifically, in the joint portion 44a of the inner region 44 of the rear side connecting member 40B, the outer nonwoven fabric sheet 52 has an upper extending portion 52a extending beyond the upper end edge 51a of the leakage preventing sheet 51. In the example shown in Fig. 6, the outer nonwoven fabric sheet 52 is directly joined to the non-surface-facing surface of the rear body exterior body 20 in the upper side extension portion 52a.

FIG. 6, in the longitudinal direction of the disposable diaper, the joint inner region 44 of the entire length of the line 44a to the symbol P ₁ represents, located joint 44a length leak-barrier sheet 51 of the symbols Q ₁ represents, out of non-woven The length of the upper side extension 52a of the sheet 52 is indicated by the symbol R ₁ . For example, the length P _{1 of the} joint portion 44a is preferably 15 mm or more, and it may be set to 15 to 50 mm, 20 to 45 mm, or 25 to 40 mm. Further, the joint length Q _{1 of the} leakage preventing sheet 51 is preferably 10 mm or more, and it may be set to 10 to 40 mm, 15 to 35 mm, or 20 to 30 mm. The length R ₁ of the upper extending portion 52a is preferably ₁ mm or more, and may be set to 1 to 30 mm, 3 to 25 mm, or 5 to 20 mm. Further, the ratio (R ₁ /P ₁ ) of the length R ₁ of the upper extending portion 52a to the entire length P ₁ of the joint portion 44a is preferably 5% or more, and may be set to 5 to 60%, 10 to 50%, and It is particularly good at 30 to 60%.

Further, as shown in Fig. 6, the outer nonwoven fabric sheet 52 extends in the longitudinal direction toward the side of the crotch portion 3, and covers the lower end edge 51b of the leakage preventing sheet 51. Specifically, the outer nonwoven fabric sheet 52 has a lower extending portion 52b that extends beyond the lower end edge 51b of the leakage preventing sheet 51 on the joint portion 45a of the outer side region 45 of the rear side connecting member 40B. As shown in Figure 6 In the example, the outer nonwoven fabric sheet 52 is directly joined to the non-facing surface of the rear body outer casing 20 at the lower side extension portion 52b.

FIG. 6, in the longitudinal direction of the disposable diaper, the joint outer region 45 of the entire length of the line 45a of the symbol P ₂ denotes located joint 45a length leak-barrier sheet 51 of the symbol Q ₂ represents, out of non-woven The length of the lower side extension 52b of the sheet 52 is indicated by the symbol R ₂ . For example, the length P _{2 of the} joint portion 45a is preferably 15 mm or more, and may be set to 15 to 50 mm, 20 to 45 mm, or 25 to 40 mm. Further, the joint length Q _{2 of the} leakage preventing sheet 51 is preferably 10 mm or more, and may be set to 10 to 40 mm, 15 to 35 mm, or 20 to 30 mm. The length R _{2 of the} lower extending portion 52b is preferably 1 mm or more, and may be set to 1 to 30 mm, 3 to 25 mm, or 5 to 20 mm. Further, the ratio (R ₂ /P ₂ ) of the length R ₂ of the lower extending portion 52b to the entire length P ₂ of the joint portion 45a is preferably 5% or more, and may be set to 5 to 60% and 10 to 50%. It is especially good at 30 to 60%.

Further, in the example disclosed in Fig. 6, in the longitudinal direction of the disposable diaper, the outer nonwoven fabric sheet 52 extends beyond the leakage preventing sheet 51 on both the waist opening portion 5 side and the lower jaw portion 3 side. However, in the longitudinal direction of the disposable diaper, the outer nonwoven fabric sheet 52 may extend beyond the leakage preventing sheet 51 at least at least one of the waist opening portion 5 side and the lower jaw portion 3. In other words, the outer nonwoven fabric sheet 52 may have at least one of the upper extension portion 52a and the lower extension portion 52b.

As described above, by extending the outer non-woven sheet 52 beyond the leakage preventing sheet 51 to cover the end edge thereof, the leakage preventing sheet 51 can be prevented from being exposed. Moreover, the outer edge of the non-woven fabric sheet 52 having a good feel can be used to cover the end edge thereof, and the hand feeling or appearance can be improved.

Further, as shown in FIGS. 3 to 6, in the present embodiment, each of the connecting members 40A and 40B on the front side and the rear side of the disposable diaper preferably has one or a plurality of connecting portions arranged along the upward folding portion 41. The telescopic member 46. The joint portion telescopic member 46 is an elastic stretch structure such as a wire-like elastic rubber. The member is disposed in the upward folded portion 41 in an extended state along the width direction of the disposable diaper. As described above, since the respective connecting members 40A and 40B are formed by laminating the leakage preventing sheet 51 and the outer non-woven fabric sheet 52, the connecting portion telescopic member 46 may be fixed between the leakage preventing sheet 51 and the outer non-woven sheet 52. When the connecting portion expansion and contraction member 46 is disposed along the upwardly folded portion 41, the intermediate portion 43 of each of the connecting members 40A and 40B and the outer casings 10 and 20 are not easily separated by the contraction action of the connecting portion expansion and contraction member 46. A gap is created. Therefore, the appearance of the diaper is improved and the fit is improved.

In each of the connecting members 40A and 40B, a plurality of tummy telescopic members 47 extending in the width direction are disposed at predetermined intervals in the longitudinal direction of the disposable diaper. . The lower abdominal elastic member 47 is fixed to each of the coupling members 40A and 40B in a state of being stretched in the width direction of the disposable diaper. However, the lower abdomen telescopic member 47 is not disposed at the center in the width direction of each of the connection members 40A and 40B, or is partially cut so as not to exhibit stretchability. That is, the lower abdomen telescopic members 47 are basically located on both sides in the width direction of the absorbent body 30. Further, the lower abdomen telescopic member 47 may partially overlap both ends in the width direction of the absorbent body 30. Similarly to the above-described connecting portion telescopic member 46, each of the lower abdomen telescopic members 47 may be fixed between the leakage preventing sheet 51 and the outer non-woven sheet 52. When the lower abdomen telescopic member 47 is contracted, the connecting members 40A and 40B are contracted to form a plurality of fine wrinkles (tummy gathers).

[First variation]

Next, a first modification of each of the coupling members 40A and 40B will be described with reference to Fig. 7 . Fig. 7 is an enlarged cross-sectional view showing the rear side connecting member 40B. However, the structure of the rear side connecting member 40B described here is also applicable to the front side connecting member 40A.

As shown in Fig. 7, the rear side connecting member 40B has an inner surface non-woven fabric sheet 53 in addition to the configuration shown in Fig. 6 and the like. Inner non-woven sheet The 53 is a member that is attached to the skin-facing surface of the leakage preventing sheet 51. The inner non-woven fabric sheet 53 is a sheet member mainly composed of a non-woven fabric, and is disposed for the purpose of improving the skin feel of the leakage preventing sheet 51 facing the skin surface. The nonwoven fabric to be used herein is not particularly limited, and examples thereof include a hot air non-woven fabric, a point fusion non-woven fabric, a non-woven fabric nonwoven fabric, an air flow non-woven fabric, a melt-blown nonwoven fabric, an SMS nonwoven fabric, and an SMMS nonwoven fabric, similarly to the outer nonwoven fabric sheet 52. Basically, the inner non-woven fabric sheet 53 is a sheet member which is liquid-permeable and air-permeable and has a good touch. In the example shown in Fig. 7, the inner non-woven fabric sheet 53 is directly joined to the non-facing surface of the rear body outer casing 20.

Similarly to the outer nonwoven fabric sheet 52, the inner surface non-woven fabric sheet 53 extends in the longitudinal direction toward the waist opening portion 5 side of the leakage preventing sheet 51, and covers the upper end edge 51a of the leakage preventing sheet 51. Specifically, in the joint portion 44a of the inner region 44 of the rear side connecting member 40B, the inner non-woven fabric sheet 53 has an upper extending portion 53a extending beyond the upper end edge 51a of the leakage preventing sheet 51. As previously mentioned, the outer nonwoven sheet 52 also has an upper extension 52a. Therefore, there is a region where the upper surface extension portion 53a of the inner surface nonwoven fabric sheet 53 and the upper side extension portion 52a of the outer surface nonwoven fabric sheet 52 overlap, and the upper side extension portions 52a, 53a of the both are joined to each other in this region. The upper extending portion 53a of the inner surface nonwoven fabric sheet 53 extends as long as the entire length P ₁ of the joint portion 44a of the inner region 44, the length Q ₁ of the leakage preventing sheet 51 at the joint portion 44a, and the upper side of the inner surface nonwoven fabric sheet 53. The length R _{1 of the} portion 53a may be set to be the same as the outer non-woven sheet 52.

Further, similarly to the above-described outer nonwoven fabric sheet 52, the inner surface non-woven fabric sheet 53 extends in the longitudinal direction from the side of the leakage preventing sheet 51 toward the lower jaw portion 3, and covers the lower end edge 51b of the leakage preventing sheet 51. Specifically, in the joint portion 45a of the outer side region 45 of the rear side connecting member 40B, the inner surface non-woven fabric sheet 53 has a lower side extending portion 53b extending beyond the lower end edge 51b of the leakage preventing sheet 51. As previously mentioned, the outer nonwoven sheet 52 also has a lower extension 52b. Therefore, there is a region where the lower side extension portion 53b of the inner surface nonwoven fabric sheet 53 and the lower side extension portion 52b of the outer nonwoven fabric sheet 52 overlap, and in this region, the lower side extension portions 52b, 53b are joined to each other. The lower extending portion 53b of the inner non-woven fabric sheet 53 has the entire length P ₂ of the joint portion 45a of the outer region 45, the length Q ₂ of the leakage preventing sheet 51 at the joint portion 45a, and the inner non-woven sheet 53. The length R ₂ of the side extension portion 53b may be set to be similar to the above-described outer nonwoven fabric sheet 52.

[Second variation]

Next, a second modification of each of the coupling members 40A and 40B will be described with reference to Fig. 8 . Further, the configuration of the rear side connecting member 40B described here is also applicable to the front side connecting member 40A. As shown in Fig. 8, the rear side connecting member 40B has an outer non-woven sheet 52 attached to the leakage preventing sheet 51 and its non-facing surface. However, in the example of Fig. 8, the outer nonwoven fabric sheet 52 is folded over at the upper end edge 51a and the lower end edge 51b of the leakage preventing sheet 51 and joined to the non-facing surface side of the leakage preventing sheet 51. In this manner, the outer non-woven fabric sheet 52 is configured to cover not only the non-facing surface of the leakage preventing sheet 51 but also the surface facing the skin.

Further, in the example of Fig. 8, the upper extending portion 52a of the outer nonwoven fabric sheet 52 which is folded back at the upper end edge 51a of the leakage preventing sheet 51 has an extending length which reaches the non-facing surface of the absorbent body 30, and is joined to the absorption. The non-facing face of the sexual body 30. In this manner, the outer non-woven fabric sheet 52 extends to the non-facing skin surface of the absorbent body 30, and the outer non-woven fabric sheet 52 prevents the leakage preventing sheet 51 from contacting the wearer's skin. In other words, in the outer nonwoven fabric sheet 52, the extension portion that is folded back to the non-facing surface side of the absorbent main body 30 functions as the inner surface non-woven fabric sheet 53 shown in the first modification (Fig. 7). In the second modification (Fig. 8), since the outer nonwoven fabric sheet 52 and the inner surface nonwoven fabric sheet 53 can be configured as an integral sheet member, the coupling members can be reduced as compared with the first modification (Fig. 7). The advantages of the number of components of 40A and 40B.

[Third variation]

Next, a third modification of the disposable diaper will be described with reference to Fig. 9. In the third modification, the intermediate portion 43, the inner region 44, and the outer region 45 of each of the coupling members are overlapped in the thickness direction while the respective connecting members 40A and 40B are folded along the upward folding line 41 and the downward folding line 42. Part of the side panel portion 4 located on both sides in the width direction is formed with a notch portion 4a. The notch portion 4a is formed by the side surface sealing portion 4 which overlaps the intermediate portion 43, the inner region 44, and the outer region 45, and a hole that communicates with the inside of the diaper from the notch portion 4a is formed. Since the hole is connected to the inside, the air permeability inside the diaper is improved in the hole portion. Moreover, a finger can be inserted into the notch portion 4a. Therefore, in the wearing state of the disposable diaper, when the finger is inserted into the notch portion 4a and the joint region 43a of each of the coupling members 40A and 40B is peeled off, the living pleats are easily spread. Further, in the pull-on disposable diaper 100 shown in Fig. 9, the side sealing portion 4 is peeled off when it is discarded. However, since the finger can be inserted into the notch portion 4a at this time, the side sealing portion 4 at the time of disposal is discarded. Stripping is easier.

In the above description, in order to express the contents of the present invention, the description of the embodiments of the present invention has been made with reference to the accompanying drawings. However, the present invention is not limited to the above-described embodiments, and includes various self-explanatory changing forms or improved forms that can be easily conceived by those skilled in the art according to the matters described in the present specification.

[Industrial availability]

The present invention is applicable to a disposable diaper such as a pull-on type or a belt type. Thus, the present invention is suitable for use in disposable diaper manufacturing.

Claims (4)

A disposable diaper comprising: a front body outer body (10) on the abdomen side of the wearer; a rear body outer body (20) on the back side of the wearer; and an absorbent body (30) located on the wearer a user's lower jaw portion, wherein the absorbent body (30) is connected via a joint portion (40) having an upwardly folded portion (41) and a downwardly folded portion (42) extending in the width direction of the disposable diaper. In the outer casing of the front body outer casing (10) and the rear body outer casing (20), the connecting portion (40) is a leakage preventing sheet (51) and is located at the foregoing The outer non-woven fabric sheet (52) on the non-skin surface side of the leakage sheet (51) is laminated in the thickness direction, and the outer non-woven fabric sheet (52) extends in the longitudinal direction of the disposable diaper beyond the leakage preventing sheet (51). An edge of either or both of the upper end edge (51a) and the lower end edge (51b). The disposable diaper according to claim 1, wherein the connecting portion (40) has an intermediate portion (43) between the upward folded portion (41) and the downward folded portion (42), wherein The intermediate portion (43) has a joint region (43a) which is in a state in which the joint portion (40) is folded in the upward folded portion (41) and the downward folded portion (42). The portion of the intermediate portion (43) facing the skin-facing side and the portion facing the non-facing surface are peelably or non-releasably joined. The disposable diaper according to claim 1 or 2, wherein the connecting portion (40) further has an inner surface non-woven sheet on the skin-facing side of the leakage preventing sheet (51) laminated in the thickness direction (53). The inner non-woven fabric sheet (53) extends in the longitudinal direction of the disposable diaper beyond either or both of the upper end edge (51a) and the lower end edge (51b) of the leakage preventing sheet (51). edge. The disposable diaper according to any one of claims 1 to 3, wherein the outer non-woven fabric sheet (52) exceeds an upper edge (51a) and a lower end edge (51b) of the leakage preventing sheet (51). Both or either of the edges are folded back toward the skin-facing side of the leak-preventing sheet (51).